On September 17, 2012, Intellectual Ventures Management, LLC, filed IPR2012-00018 and IPR2012-00019 against Haynes and Boone, LLP on U.S. Patent Nos. 7,566,960 and 8,062,968, and IPR2012-00020 and IPR2012-00022 against Xilinx, Inc. on U.S. Patent No. 8058897 and 7994609. Ariosa Diagnostics filed IPR 2012-00022 against Isis Innovation Limited on U.S. Patent No. 6,258,540.